Assiglstgb -to gektebaii electric



S. A. MOSS.

ELASTIC-FLUID TURBINE.

APPLICATION mum APB..3, 1914,

1,1 05,820. Patented Aug. 4, 1914.

5-; f a s I L 1 L s Witnesses: Inventor:

7 SarfiFor-d A. Moss,

'J I CE' UNITED STATES PATENT curios.

hmdssror nmnn; mnssncnusnrrs, ASSIGNOB -T GENERAL ELnc'rnIc au'ri- 1g n comrnny n conroanr on ornnw YORK.

Patented Aug. 4, 1914.

" Application n rnsgiam. seri inaeaaaav,

To all whom it may concern;

Be it known that I, SANFORD A: Moss, a

' citizen of the United States, residing at Lynn, county of Essex, State of Massachu setts, have invented certain new and useful Improvements in Elastic-Fluid Turbines, of which'the following is a specification.

The present invention relates to; turbines and particularly to a turbine having a plurality of stages, the final stage being con nected to exhaust into a condenser. In connection with the operation of such turbines it sometimes happens that the condenser vacuum is lost and the turbine is called upon to operate non-condensing.- Under these circumstances theefiiciency of the turbine is improved by permitting the turbine to exhaust from an intermediate st'a e direct to atmosphere, thereby cutting 0 the final embodiment of my invention.

' 2 is a high pressure turbine receiving motive fluid by way of conduit 3 and exhausting through conduit 4 to the condenser 5. The turbine is here shown as being of the Curtis or impulse type as being connected to drive a generator 6. Leading from an inter mediate stage of the turbine is the conduit 7 in which is arranged a suitable valve 8, preferably a double beat drbalanced valve. This valve will preferably be water-sealed as shown at 9, a suitable gage 10 being provided to indicate the level. Connected to the stem of the valve 1s a movable'abutment, .here shown' as a piston ll, operating in the cylinder 12. The one side of the-piston is subjected to the pressure of the condenser through the pipe 13, the other slde being subjected to a substantially constant pressure as atmospheric." The wilve is biased to open position as by the adjustable Weight 1-4 on the lever 15. Itwill be understood that the pressure responsive device illustrated and thebiasing means are only by way of example and that I may use other forms, as found desirable. By using a balanced vs ye as shown at 8 variations in the pressure in i the intermediate stage to which the conduit 7 ispconnected will not in any way afiect the movable abutment- 11. The only way the valve can be opened is by a failure of the, vacuum.

In operation, so long as the condenser vacuum is maintained the constant pressure on the one side of the movable abutment,

here the upper side, will be sufficient to seat the valve against the biasing :force tending to open it. If, for any reason, the vacuum is lost, the pressure of the condenser will then tend to equalize theconstant pressure and permit the biasing force 'to open the valve. Should thecondenser vacuum be restored,

the valve will be automatically reseated as will be obvious.

In accordance with the provisions of the patent statutes, I have'described the principle offoperati'on of my invention, together with the apparatus which I now consider to represent the best embodiment thereof but -I desire tohave it understood thatthe p- .paratus shown is only illustrative, and that the invention; can be carried out by other means; i

What I claim as new and desire to secure by Letters Patent of the United States, is,--'

1. The combination of a turbine having a conduit leading from-an intermediate stage, a balanced "valve in said conduitta movable abutment connected to the stem of the valve, a condenser, and a pipe connecting one side of said abutment to the condenser, the other side being subjected to a substantially con. stant pressure.

2. The combination of a turbine having a conduit leading from an intermediate stage, a balanced valve in said conduit, means for biasing'the valve to open position, a condenser, a stem for the valve, a movableabuc ment connected to thestem, one side of which is subjected to substantially constant pres sure, and a pipe connecting the other side of the abutment to the condenser.

3. The combination of a turbine, a conduit connected with an intermediate stage, a water sealed valve biased to an open position in the conduit, a cylinder, a piston therein, a stcmlconnecting the valve thereto, and a pipe connecting the cylinderwith the condenser so as to cause the valve to remain closed so long as the vacuum is maintained.

41. The combination of a turbine, a'conduit can uected with an intermediate stage, a valve in the conduit biased to dpen position, a mov- In witness 'whereof, I have hereunto set gible abutment connected to the valve, and my hand this thirty-first day of March, 3

means subjecting one side of the abutment to 1914:.

tl'iefpressure of the condenser, the other side SANFORDA; Moss. 5 being subjected to a substantially constant WVitnesses:

pressure, the pressure on said last-named side J 01m A. MCMANUS,- J r.,

being oppdsed t0 the biasing'force. J QHN J u MCKENNEY. 1 

